/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a6b;
            --primary-light: #2a5a9b;
            --primary-dark: #0f2446;
            --accent: #e85d26;
            --accent-light: #f07a4a;
            --accent-glow: rgba(232, 93, 38, 0.25);
            --bg: #f5f7fa;
            --bg-white: #ffffff;
            --bg-dark: #0f2446;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-lighter: #9ca3af;
            --text-white: #ffffff;
            --border: #e5e7eb;
            --border-light: #f0f0f0;
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(0,0,0,0.07);
            --shadow-lg: 0 12px 48px rgba(0,0,0,0.10);
            --shadow-accent: 0 6px 28px rgba(232,93,38,0.30);
            --transition: all 0.30s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea { font-family: inherit; font-size: 1rem; border: none; outline: none; transition: var(--transition); }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text); }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.35rem; }
        h4 { font-size: 1.1rem; }
        p { color: var(--text-light); margin-bottom: 0.75rem; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        section { padding: 80px 0; }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--accent);
            background: rgba(232,93,38,0.10);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text);
        }
        .section-sub {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 640px;
            margin-bottom: 40px;
        }
        .text-center { text-align: center; }
        .mx-auto { margin-left: auto; margin-right: auto; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
            box-shadow: var(--shadow-accent);
        }
        .btn-primary:hover {
            background: #d04e1a;
            border-color: #d04e1a;
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(232,93,38,0.40);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border-color: rgba(255,255,255,0.40);
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-dark {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-dark:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        .btn-sm { padding: 10px 22px; font-size: 0.9rem; }

        /* ===== Header & Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--header-h);
            transition: var(--transition);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i { color: var(--accent); font-size: 1.6rem; }
        .logo span { color: var(--accent); }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-list a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            position: relative;
            padding: 4px 0;
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2.5px;
            background: var(--accent);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-list a:hover { color: var(--accent); }
        .nav-list a:hover::after { width: 100%; }
        .nav-list a.active { color: var(--accent); }
        .nav-list a.active::after { width: 100%; }
        .nav-cta .btn { padding: 10px 24px; font-size: 0.9rem; }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 3px;
            background: var(--text);
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

        /* Mobile Nav */
        .mobile-nav {
            position: fixed;
            top: var(--header-h);
            left: 0;
            width: 100%;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            padding: 20px 24px;
            display: none;
            flex-direction: column;
            gap: 16px;
            box-shadow: var(--shadow-lg);
            z-index: 999;
        }
        .mobile-nav.open { display: flex; }
        .mobile-nav a {
            font-size: 1.1rem;
            font-weight: 500;
            color: var(--text);
            padding: 8px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .mobile-nav a:last-child { border-bottom: none; }
        .mobile-nav a.active { color: var(--accent); }

        /* ===== Hero ===== */
        .hero {
            margin-top: var(--header-h);
            min-height: 90vh;
            display: flex;
            align-items: center;
            position: relative;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, #1e4d7a 100%);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.20;
            mix-blend-mode: overlay;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(232,93,38,0.15) 0%, transparent 70%);
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            padding-top: 40px;
            padding-bottom: 40px;
        }
        .hero-content { max-width: 600px; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(232,93,38,0.18);
            color: var(--accent-light);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
            border: 1px solid rgba(232,93,38,0.25);
        }
        .hero-badge i { font-size: 0.9rem; }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            color: var(--text-white);
            line-height: 1.15;
            margin-bottom: 20px;
        }
        .hero h1 span { color: var(--accent); }
        .hero p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.75);
            max-width: 520px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 40px;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.12);
        }
        .hero-stat h3 { font-size: 2rem; color: #fff; font-weight: 800; }
        .hero-stat h3 i { color: var(--accent); margin-right: 4px; }
        .hero-stat p { font-size: 0.85rem; color: rgba(255,255,255,0.55); margin: 0; }

        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-card {
            background: rgba(255,255,255,0.06);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255,255,255,0.10);
            border-radius: var(--radius-lg);
            padding: 32px;
            width: 100%;
            max-width: 420px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.25);
        }
        .hero-card-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .hero-card-header .dot {
            width: 10px; height: 10px;
            border-radius: 50%;
            display: inline-block;
        }
        .dot.red { background: #ff5f57; }
        .dot.yellow { background: #ffbd2e; }
        .dot.green { background: #28c840; }
        .hero-card-header span { color: rgba(255,255,255,0.35); font-size: 0.8rem; margin-left: 4px; }
        .hero-card-body { display: flex; flex-direction: column; gap: 16px; }
        .hero-card-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 14px;
            background: rgba(255,255,255,0.05);
            border-radius: var(--radius-sm);
        }
        .hero-card-row .label { color: rgba(255,255,255,0.5); font-size: 0.85rem; }
        .hero-card-row .value { color: #fff; font-weight: 600; font-size: 0.95rem; }
        .hero-card-row .value i { color: var(--accent); margin-right: 4px; }
        .hero-card-footer {
            margin-top: 20px;
            padding-top: 16px;
            border-top: 1px solid rgba(255,255,255,0.08);
            text-align: center;
        }
        .hero-card-footer .tip {
            color: rgba(255,255,255,0.40);
            font-size: 0.8rem;
        }
        .hero-card-footer .tip i { color: var(--accent); }

        /* ===== Features ===== */
        .features { background: var(--bg-white); }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.6rem;
            color: #fff;
        }
        .feature-icon.blue { background: linear-gradient(135deg, #2a5a9b, #1a3a6b); }
        .feature-icon.orange { background: linear-gradient(135deg, #f07a4a, #e85d26); }
        .feature-icon.teal { background: linear-gradient(135deg, #0ea5a0, #0d7a76); }
        .feature-card h3 { margin-bottom: 10px; font-size: 1.2rem; }
        .feature-card p { font-size: 0.95rem; margin: 0; }

        /* ===== Categories ===== */
        .categories { background: var(--bg); }
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .category-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .category-card-body {
            padding: 20px 22px 24px;
        }
        .category-card-body .tag {
            display: inline-block;
            background: rgba(232,93,38,0.10);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
        }
        .category-card-body h3 { font-size: 1.15rem; margin-bottom: 8px; }
        .category-card-body p { font-size: 0.9rem; margin: 0; color: var(--text-light); }
        .category-card-body .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            color: var(--accent);
            font-weight: 600;
            font-size: 0.9rem;
        }
        .category-card-body .cat-link i { transition: var(--transition); }
        .category-card-body .cat-link:hover i { transform: translateX(4px); }

        /* ===== News / CMS List ===== */
        .news { background: var(--bg-white); }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .news-card {
            display: flex;
            gap: 20px;
            background: var(--bg);
            border-radius: var(--radius);
            padding: 20px;
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: transparent;
        }
        .news-card .thumb {
            flex-shrink: 0;
            width: 140px;
            height: 110px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            background: var(--border);
        }
        .news-card .info { flex: 1; }
        .news-card .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-lighter);
            margin-bottom: 6px;
        }
        .news-card .meta .cat {
            background: rgba(232,93,38,0.10);
            color: var(--accent);
            padding: 2px 10px;
            border-radius: 12px;
            font-weight: 500;
        }
        .news-card h3 { font-size: 1.05rem; margin-bottom: 6px; line-height: 1.4; }
        .news-card h3 a { color: var(--text); }
        .news-card h3 a:hover { color: var(--accent); }
        .news-card p { font-size: 0.88rem; color: var(--text-light); margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            color: var(--text-light);
            background: var(--bg);
            border-radius: var(--radius);
            font-size: 1rem;
        }

        /* ===== Stats / Data ===== */
        .stats {
            background: var(--primary-dark);
            position: relative;
            overflow: hidden;
        }
        .stats::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .stats .container { position: relative; z-index: 1; }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stat-item h3 {
            font-size: 2.8rem;
            font-weight: 900;
            color: #fff;
        }
        .stat-item h3 i { color: var(--accent); font-size: 2rem; margin-right: 6px; }
        .stat-item p { color: rgba(255,255,255,0.55); font-size: 0.95rem; margin: 4px 0 0; }

        /* ===== How It Works ===== */
        .steps { background: var(--bg); }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 28px 20px;
            text-align: center;
            position: relative;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(232,93,38,0.30);
        }
        .step-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .step-card p { font-size: 0.9rem; margin: 0; }

        /* ===== FAQ ===== */
        .faq { background: var(--bg-white); }
        .faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item.open { border-color: var(--accent); }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
        }
        .faq-question i { color: var(--accent); transition: var(--transition); font-size: 0.9rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.95rem;
            color: var(--text-light);
            display: none;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .cta .container { position: relative; z-index: 1; text-align: center; }
        .cta h2 { color: #fff; font-size: 2.4rem; margin-bottom: 16px; }
        .cta p { color: rgba(255,255,255,0.65); font-size: 1.1rem; max-width: 560px; margin: 0 auto 32px; }
        .cta .btn-primary { font-size: 1.1rem; padding: 16px 44px; }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.65);
            padding: 48px 0 28px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo { color: #fff; margin-bottom: 12px; }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.5); max-width: 300px; }
        .footer h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
        .footer ul li { margin-bottom: 10px; }
        .footer ul a { color: rgba(255,255,255,0.55); font-size: 0.9rem; }
        .footer ul a:hover { color: var(--accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.40);
        }
        .footer-bottom a { color: rgba(255,255,255,0.40); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero .container { grid-template-columns: 1fr; gap: 40px; text-align: center; }
            .hero-content { max-width: 100%; }
            .hero p { margin-left: auto; margin-right: auto; }
            .hero-buttons { justify-content: center; }
            .hero-stats { justify-content: center; }
            .hero-visual { display: none; }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .categories-grid { grid-template-columns: repeat(2, 1fr); }
            .news-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-inner { grid-template-columns: 1fr 1fr; }
            h1 { font-size: 2.2rem; }
            .section-title { font-size: 1.8rem; }
            .hero h1 { font-size: 2.4rem; }
        }
        @media (max-width: 768px) {
            :root { --header-h: 64px; }
            .nav-list, .nav-cta { display: none; }
            .hamburger { display: flex; }
            section { padding: 56px 0; }
            .hero { min-height: 70vh; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stat h3 { font-size: 1.6rem; }
            .features-grid { grid-template-columns: 1fr; }
            .categories-grid { grid-template-columns: 1fr; }
            .news-card { flex-direction: column; }
            .news-card .thumb { width: 100%; height: 160px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
            .stat-item h3 { font-size: 2rem; }
            .steps-grid { grid-template-columns: 1fr; }
            .footer-inner { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta h2 { font-size: 1.8rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero h1 { font-size: 1.7rem; }
            .hero-badge { font-size: 0.75rem; }
            .btn { padding: 12px 24px; font-size: 0.9rem; }
            .section-title { font-size: 1.5rem; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .stat-item h3 { font-size: 1.6rem; }
        }

        /* ===== Misc Utilities ===== */
        .gap-8 { gap: 8px; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

        /* ===== Accessibility ===== */
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --primary: #e63946;
  --primary-dark: #c1121f;
  --primary-light: #ff6b6b;
  --secondary: #1d3557;
  --secondary-light: #2a4a7f;
  --accent: #f4a261;
  --accent-light: #f9c784;
  --bg: #f8f9fa;
  --bg-card: #ffffff;
  --bg-dark: #1a1a2e;
  --text: #1a1a2e;
  --text-light: #6c757d;
  --text-white: #ffffff;
  --border: #e9ecef;
  --border-light: #f0f0f0;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --shadow-hover: 0 8px 30px rgba(0,0,0,0.15);
  --transition: all 0.3s ease;
  --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  --max-w: 1200px;
  --header-h: 70px;
  --nav-h: 50px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  padding-top: calc(var(--header-h) + var(--nav-h));
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: inherit; }
.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }
.section-title { font-size: 1.75rem; font-weight: 800; margin-bottom: 0.5rem; color: var(--text); }
.section-subtitle { font-size: 1rem; color: var(--text-light); margin-bottom: 2rem; }
.text-center { text-align: center; }

/* ===== Header ===== */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: var(--bg-card);
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
}
.header-top {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-h); padding: 0 20px;
  max-width: var(--max-w); margin: 0 auto;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.5rem; font-weight: 900; color: var(--primary); letter-spacing: -0.5px;
}
.logo i { font-size: 1.3rem; }
.logo span { color: var(--secondary); font-weight: 700; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.header-search {
  display: flex; align-items: center; background: var(--bg); border-radius: 50px;
  padding: 0 16px; border: 1px solid var(--border); transition: var(--transition);
}
.header-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(230,57,70,0.1); }
.header-search input {
  border: none; background: transparent; padding: 8px 0; outline: none;
  width: 180px; font-size: 0.9rem; color: var(--text);
}
.header-search button {
  border: none; background: transparent; color: var(--text-light); cursor: pointer;
  padding: 8px; font-size: 0.9rem;
}
.header-search button:hover { color: var(--primary); }

/* ===== Navigation ===== */
.nav-bar {
  background: var(--secondary); border-top: 3px solid var(--primary);
  height: var(--nav-h); overflow: hidden;
}
.nav-list {
  display: flex; align-items: center; height: 100%; gap: 0;
  max-width: var(--max-w); margin: 0 auto; padding: 0 20px;
  overflow-x: auto; scrollbar-width: none;
}
.nav-list::-webkit-scrollbar { display: none; }
.nav-list a {
  display: flex; align-items: center; height: 100%; padding: 0 20px;
  color: rgba(255,255,255,0.85); font-size: 0.9rem; font-weight: 600;
  white-space: nowrap; position: relative; transition: var(--transition);
  letter-spacing: 0.3px;
}
.nav-list a:hover { color: #fff; background: rgba(255,255,255,0.1); }
.nav-list a.active { color: #fff; background: var(--primary); }
.nav-list a.active::after { content: ''; position: absolute; bottom: 0; left: 20%; right: 20%; height: 3px; background: var(--accent); border-radius: 3px 3px 0 0; }
.nav-hot {
  margin-left: auto; display: flex; align-items: center; gap: 6px;
  color: var(--accent); font-size: 0.8rem; font-weight: 600;
  background: rgba(244,162,97,0.15); padding: 4px 14px; border-radius: 50px;
  white-space: nowrap;
}
.nav-hot i { font-size: 0.7rem; animation: pulse 1.5s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }

/* ===== Mobile Toggle ===== */
.mobile-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.5rem; cursor: pointer; padding: 4px; }

/* ===== Article Hero ===== */
.article-hero {
  position: relative; padding: 60px 0 40px;
  background: linear-gradient(135deg, var(--secondary) 0%, #0f1a2e 100%);
  overflow: hidden;
}
.article-hero::before {
  content: ''; position: absolute; inset: 0;
  background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  opacity: 0.12; mix-blend-mode: overlay;
}
.article-hero .container { position: relative; z-index: 2; }
.article-breadcrumb {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-bottom: 20px;
}
.article-breadcrumb a { color: rgba(255,255,255,0.7); }
.article-breadcrumb a:hover { color: var(--accent); }
.article-breadcrumb .sep { color: rgba(255,255,255,0.3); }
.article-hero h1 {
  font-size: 2rem; font-weight: 900; color: #fff; line-height: 1.3;
  max-width: 800px; margin-bottom: 16px;
}
.article-meta {
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  color: rgba(255,255,255,0.7); font-size: 0.9rem;
}
.article-meta .badge {
  background: var(--primary); color: #fff; padding: 2px 14px;
  border-radius: 50px; font-size: 0.75rem; font-weight: 700;
}
.article-meta i { margin-right: 4px; color: var(--accent); }

/* ===== Article Main ===== */
.article-main { padding: 40px 0 60px; }
.article-layout {
  display: grid; grid-template-columns: 1fr 320px; gap: 40px;
}
.article-content {
  background: var(--bg-card); border-radius: var(--radius); padding: 40px;
  box-shadow: var(--shadow);
}
.article-body { font-size: 1.05rem; line-height: 1.9; color: var(--text); }
.article-body p { margin-bottom: 1.2em; }
.article-body h2 { font-size: 1.5rem; font-weight: 800; margin: 1.8em 0 0.6em; color: var(--secondary); }
.article-body h3 { font-size: 1.2rem; font-weight: 700; margin: 1.5em 0 0.5em; color: var(--text); }
.article-body ul, .article-body ol { margin-bottom: 1.2em; padding-left: 1.5em; }
.article-body li { margin-bottom: 0.4em; list-style: disc; }
.article-body img { margin: 1.5em 0; border-radius: var(--radius-sm); box-shadow: var(--shadow); }
.article-body blockquote {
  border-left: 4px solid var(--primary); background: var(--bg); padding: 16px 24px;
  margin: 1.5em 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text-light);
}
.article-tags {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border);
}
.article-tags .tag {
  background: var(--bg); color: var(--text-light); padding: 4px 14px;
  border-radius: 50px; font-size: 0.8rem; font-weight: 600;
  transition: var(--transition);
}
.article-tags .tag:hover { background: var(--primary); color: #fff; }
.article-share {
  display: flex; align-items: center; gap: 12px; margin-top: 20px;
}
.article-share span { font-size: 0.9rem; color: var(--text-light); font-weight: 600; }
.article-share a {
  display: flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 50%; background: var(--bg);
  color: var(--text-light); transition: var(--transition); font-size: 1rem;
}
.article-share a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

/* ===== Sidebar ===== */
.article-sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-card {
  background: var(--bg-card); border-radius: var(--radius); padding: 24px;
  box-shadow: var(--shadow);
}
.sidebar-card h3 {
  font-size: 1.1rem; font-weight: 800; margin-bottom: 16px; color: var(--text);
  display: flex; align-items: center; gap: 8px;
}
.sidebar-card h3 i { color: var(--primary); }
.sidebar-list { display: flex; flex-direction: column; gap: 12px; }
.sidebar-list li { border-bottom: 1px solid var(--border-light); padding-bottom: 12px; }
.sidebar-list li:last-child { border-bottom: none; padding-bottom: 0; }
.sidebar-list a {
  display: flex; gap: 12px; align-items: flex-start; color: var(--text);
  transition: var(--transition);
}
.sidebar-list a:hover { color: var(--primary); }
.sidebar-list .thumb {
  width: 70px; height: 50px; border-radius: 6px; object-fit: cover; flex-shrink: 0;
  background: var(--bg);
}
.sidebar-list .info { flex: 1; min-width: 0; }
.sidebar-list .info .title { font-size: 0.9rem; font-weight: 600; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.4; }
.sidebar-list .info .date { font-size: 0.75rem; color: var(--text-light); margin-top: 4px; }
.sidebar-cta {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff; text-align: center; padding: 28px 20px;
}
.sidebar-cta h3 { color: #fff; font-size: 1.2rem; }
.sidebar-cta p { color: rgba(255,255,255,0.8); font-size: 0.85rem; margin-bottom: 16px; }
.sidebar-cta .btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; color: var(--primary); padding: 10px 28px;
  border-radius: 50px; font-weight: 700; font-size: 0.9rem;
  transition: var(--transition);
}
.sidebar-cta .btn:hover { background: var(--accent); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.2); }

/* ===== Related Section ===== */
.related-section { padding: 40px 0 60px; background: var(--bg); }
.related-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}

/* ===== Not Found ===== */
.not-found {
  text-align: center; padding: 80px 20px; background: var(--bg-card);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.not-found i { font-size: 4rem; color: var(--text-light); margin-bottom: 20px; }
.not-found h2 { font-size: 1.5rem; font-weight: 800; margin-bottom: 12px; }
.not-found p { color: var(--text-light); margin-bottom: 24px; }
.not-found .btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--primary); color: #fff; padding: 12px 32px;
  border-radius: 50px; font-weight: 700; transition: var(--transition);
}
.not-found .btn:hover { background: var(--primary-dark); transform: translateY(-2px); }

/* ===== Footer ===== */
.footer {
  background: var(--bg-dark); color: rgba(255,255,255,0.8); padding: 50px 0 0;
}
.footer-inner {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .logo { color: #fff; font-size: 1.4rem; margin-bottom: 12px; }
.footer-brand .logo span { color: var(--accent); }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.6); max-width: 320px; }
.footer h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 16px; }
.footer ul { display: flex; flex-direction: column; gap: 8px; }
.footer ul li { font-size: 0.9rem; color: rgba(255,255,255,0.6); }
.footer ul li i { width: 20px; }
.footer ul a { color: rgba(255,255,255,0.6); transition: var(--transition); }
.footer ul a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap;
  padding: 20px 0; font-size: 0.85rem; color: rgba(255,255,255,0.4);
}
.footer-bottom a { color: rgba(255,255,255,0.4); }
.footer-bottom a:hover { color: var(--accent); }
.footer-bottom .sep { margin: 0 10px; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  body { padding-top: calc(var(--header-h) + 44px); }
  :root { --nav-h: 44px; }
  .header-search input { width: 120px; }
  .mobile-toggle { display: block; }
  .nav-list a { padding: 0 14px; font-size: 0.8rem; }
  .nav-hot { display: none; }
  .article-hero h1 { font-size: 1.5rem; }
  .article-content { padding: 24px; }
  .article-body { font-size: 1rem; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .sidebar-list .thumb { width: 60px; height: 44px; }
}

@media (max-width: 520px) {
  .header-top { padding: 0 12px; }
  .logo { font-size: 1.2rem; }
  .header-search input { width: 90px; font-size: 0.8rem; }
  .header-search { padding: 0 10px; }
  .article-hero { padding: 40px 0 24px; }
  .article-hero h1 { font-size: 1.25rem; }
  .article-meta { gap: 10px; font-size: 0.8rem; }
  .article-content { padding: 16px; border-radius: var(--radius-sm); }
  .section-title { font-size: 1.35rem; }
  .sidebar-card { padding: 16px; }
}

/* ===== Utility ===== */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #f8d7da;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --accent-dark: #e76f51;
            --bg: #f8f9fa;
            --bg-alt: #ffffff;
            --bg-dark: #1d3557;
            --text: #212529;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #dee2e6;
            --border-light: #e9ecef;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.14);
            --shadow-nav: 0 4px 20px rgba(0, 0, 0, 0.06);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container: 1200px;
            --header-h: 72px;
            --nav-h: 48px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            padding-top: calc(var(--header-h) + var(--nav-h));
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 顶部品牌栏 ===== */
        .header-top {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: var(--bg-alt);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-nav);
            display: flex;
            align-items: center;
        }
        .header-top .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.4rem;
        }
        .logo span {
            color: var(--primary);
        }
        .logo:hover {
            color: var(--secondary);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-actions .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 0 16px;
            height: 40px;
            transition: border var(--transition), box-shadow var(--transition);
        }
        .header-actions .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px var(--primary-light);
        }
        .header-actions .search-box input {
            border: none;
            background: transparent;
            outline: none;
            padding: 8px 0;
            width: 180px;
            color: var(--text);
        }
        .header-actions .search-box input::placeholder {
            color: var(--text-light);
        }
        .header-actions .search-box button {
            background: none;
            border: none;
            color: var(--text-light);
            cursor: pointer;
            padding: 4px;
            font-size: 1rem;
            transition: color var(--transition);
        }
        .header-actions .search-box button:hover {
            color: var(--primary);
        }
        .header-actions .hot-label {
            font-size: 0.8rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .header-actions .hot-label i {
            color: var(--accent);
        }
        .header-actions .hot-label a {
            color: var(--secondary);
            font-weight: 600;
            font-size: 0.85rem;
        }
        .header-actions .hot-label a:hover {
            color: var(--primary);
        }

        /* ===== 导航栏 ===== */
        .nav-bar {
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            z-index: 999;
            height: var(--nav-h);
            background: var(--secondary);
            display: flex;
            align-items: center;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }
        .nav-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-list a {
            padding: 8px 20px;
            border-radius: 8px;
            color: rgba(255, 255, 255, 0.85);
            font-weight: 500;
            font-size: 0.95rem;
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
        }
        .nav-list a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }
        .nav-list a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .nav-list a.active:hover {
            background: var(--primary-dark);
        }
        .nav-trends {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
        }
        .nav-trends i {
            color: var(--accent);
        }
        .nav-trends a {
            color: rgba(255, 255, 255, 0.8);
            padding: 2px 10px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.08);
            font-size: 0.8rem;
            transition: background var(--transition);
        }
        .nav-trends a:hover {
            background: rgba(255, 255, 255, 0.18);
            color: #fff;
        }

        /* ===== 移动端导航 ===== */
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        @media (max-width: 768px) {
            .nav-list {
                display: none;
                flex-direction: column;
                position: absolute;
                top: var(--nav-h);
                left: 0;
                right: 0;
                background: var(--secondary);
                padding: 12px 16px;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
                gap: 2px;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list a {
                padding: 12px 16px;
                border-radius: 8px;
                width: 100%;
            }
            .nav-toggle {
                display: block;
            }
            .nav-trends {
                display: none;
            }
            .header-actions .search-box input {
                width: 120px;
            }
            .header-actions .hot-label {
                display: none;
            }
            body {
                padding-top: calc(var(--header-h) + var(--nav-h));
            }
        }
        @media (max-width: 520px) {
            .logo {
                font-size: 1.2rem;
            }
            .header-actions .search-box {
                padding: 0 10px;
                height: 34px;
            }
            .header-actions .search-box input {
                width: 80px;
                font-size: 0.85rem;
            }
            .nav-list a {
                font-size: 0.9rem;
                padding: 10px 14px;
            }
        }

        /* ===== 页面横幅 ===== */
        .page-banner {
            background: linear-gradient(135deg, var(--secondary) 0%, #0b1a2e 100%);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
            min-height: 240px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .page-banner p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 700px;
            margin: 0 auto 20px;
        }
        .page-banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
        }
        .page-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }
        .page-banner .breadcrumb a:hover {
            color: #fff;
        }
        .page-banner .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.3);
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 40px 0 36px;
                min-height: 180px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .page-banner p {
                font-size: 0.9rem;
            }
        }

        /* ===== 分类导航标签 ===== */
        .category-tabs {
            background: var(--bg-alt);
            border-bottom: 1px solid var(--border-light);
            padding: 16px 0;
            position: sticky;
            top: calc(var(--header-h) + var(--nav-h));
            z-index: 20;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
        }
        .category-tabs .container {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .category-tabs a {
            padding: 8px 22px;
            border-radius: 50px;
            background: var(--bg);
            border: 1px solid var(--border);
            color: var(--text);
            font-weight: 500;
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .category-tabs a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .category-tabs a.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.25);
        }
        @media (max-width: 520px) {
            .category-tabs a {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 64px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: #fff;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.3px;
        }
        .section-title p {
            color: var(--text-light);
            max-width: 620px;
            margin: 12px auto 0;
            font-size: 1.05rem;
        }
        .section-title.light h2 {
            color: #fff;
        }
        .section-title.light p {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-title .title-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        @media (max-width: 768px) {
            .section {
                padding: 40px 0;
            }
            .section-title {
                margin-bottom: 32px;
            }
            .section-title h2 {
                font-size: 1.5rem;
            }
            .section-title p {
                font-size: 0.95rem;
            }
        }

        /* ===== 指南卡片网格 ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 28px;
        }
        .guide-card {
            background: var(--bg-alt);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform var(--transition), box-shadow var(--transition);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--border-light);
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .guide-card .card-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .guide-card .card-img .badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        }
        .guide-card .card-img .badge.hot {
            background: var(--accent);
        }
        .guide-card .card-img .badge.new {
            background: var(--secondary-light);
        }
        .guide-card .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        .guide-card .card-body h3 a {
            color: var(--text);
        }
        .guide-card .card-body h3 a:hover {
            color: var(--primary);
        }
        .guide-card .card-body .meta {
            display: flex;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 12px;
        }
        .guide-card .card-body .meta i {
            margin-right: 4px;
        }
        .guide-card .card-body p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
            flex: 1;
        }
        .guide-card .card-body .card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid var(--border-light);
        }
        .guide-card .card-body .card-footer .tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .guide-card .card-body .card-footer .tags span {
            background: var(--bg);
            padding: 2px 10px;
            border-radius: 50px;
            font-size: 0.7rem;
            color: var(--text-light);
            border: 1px solid var(--border-light);
        }
        .guide-card .card-body .card-footer .read-more {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .guide-card .card-body .card-footer .read-more:hover {
            gap: 8px;
        }
        @media (max-width: 768px) {
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .guide-card .card-img {
                height: 180px;
            }
            .guide-card .card-body {
                padding: 18px;
            }
        }
        @media (max-width: 520px) {
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .guide-card .card-img {
                height: 160px;
            }
        }

        /* ===== 步骤流程 ===== */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 32px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            position: relative;
            padding-top: 16px;
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            display: block;
            width: 52px;
            height: 52px;
            line-height: 52px;
            margin: 0 auto 16px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            font-size: 1.4rem;
            font-weight: 700;
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.25);
        }
        .step-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        .step-item p {
            color: var(--text-light);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .step-item .step-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .steps-row .step-item+.step-item::after {
            content: '→';
            position: absolute;
            left: -20px;
            top: 36px;
            font-size: 1.6rem;
            color: var(--border);
            font-weight: 300;
        }
        @media (max-width: 768px) {
            .steps-row {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .steps-row .step-item+.step-item::after {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .steps-row {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-alt);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 12px;
            list-style: none;
            color: var(--text);
            transition: background var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::before {
            content: '\f059';
            font-family: 'Font Awesome 6 Free';
            font-weight: 400;
            color: var(--primary);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            margin-left: auto;
            color: var(--text-light);
            transition: transform var(--transition);
            font-size: 0.8rem;
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item[open] summary {
            background: var(--primary-light);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.8;
            border-top: 1px solid var(--border-light);
            padding-top: 16px;
        }
        @media (max-width: 520px) {
            .faq-item summary {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
            .faq-item .faq-answer {
                padding: 0 16px 16px;
                font-size: 0.9rem;
            }
        }

        /* ===== CTA ===== */
        .cta-box {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-box .cta-content {
            position: relative;
            z-index: 1;
        }
        .cta-box h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-box p {
            font-size: 1.05rem;
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-box .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            color: var(--primary);
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: transform var(--transition), box-shadow var(--transition);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }
        .cta-box .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 36px rgba(0, 0, 0, 0.2);
            color: var(--primary-dark);
        }
        .cta-box .cta-btn i {
            transition: transform var(--transition);
        }
        .cta-box .cta-btn:hover i {
            transform: translateX(4px);
        }
        @media (max-width: 768px) {
            .cta-box {
                padding: 40px 24px;
            }
            .cta-box h3 {
                font-size: 1.4rem;
            }
            .cta-box p {
                font-size: 0.95rem;
            }
            .cta-box .cta-btn {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .cta-box {
                padding: 32px 16px;
                border-radius: var(--radius);
            }
            .cta-box h3 {
                font-size: 1.2rem;
            }
        }

        /* ===== 功能列表（图文） ===== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .feature-row .feature-img {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            background: var(--bg-alt);
            min-height: 280px;
            background-size: cover;
            background-position: center;
        }
        .feature-row .feature-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text);
        }
        .feature-row .feature-text ul {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .feature-row .feature-text ul li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.95rem;
            color: var(--text-light);
        }
        .feature-row .feature-text ul li i {
            color: var(--primary);
            font-size: 1.1rem;
            margin-top: 3px;
            flex-shrink: 0;
        }
        .feature-row.reverse {
            direction: rtl;
        }
        .feature-row.reverse .feature-text {
            direction: ltr;
        }
        @media (max-width: 768px) {
            .feature-row {
                grid-template-columns: 1fr;
                gap: 24px;
                direction: ltr;
            }
            .feature-row.reverse {
                direction: ltr;
            }
            .feature-row .feature-img {
                min-height: 200px;
            }
            .feature-row .feature-text h3 {
                font-size: 1.3rem;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            padding: 24px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: background var(--transition), transform var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }
        .stat-item .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stat-item .num span {
            color: var(--accent);
        }
        .stat-item .label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
        }
        @media (max-width: 520px) {
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item .num {
                font-size: 1.8rem;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 0;
        }
        .footer .logo {
            color: #fff;
            font-size: 1.5rem;
        }
        .footer .logo span {
            color: var(--primary);
        }
        .footer .logo i {
            color: var(--primary);
        }
        .footer p {
            font-size: 0.9rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 12px;
            max-width: 320px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer ul li a:hover {
            color: #fff;
        }
        .footer ul li i {
            margin-right: 8px;
            width: 16px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 768px) {
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer p {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-light);
        }

        /* ===== 选中颜色 ===== */
        ::selection {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 加载动画 ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .section .container>* {
            animation: fadeUp 0.5s ease forwards;
        }

        /* ===== 实时状态条 ===== */
        .live-bar {
            background: linear-gradient(90deg, var(--accent), var(--accent-dark));
            padding: 10px 0;
            color: #fff;
            font-size: 0.9rem;
            font-weight: 500;
            text-align: center;
            position: relative;
            z-index: 5;
        }
        .live-bar .container {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .live-bar .live-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            background: #fff;
            border-radius: 50%;
            animation: pulse 1.2s infinite;
            margin-right: 6px;
        }
        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(0.8);
            }
        }
        .live-bar .countdown {
            background: rgba(0, 0, 0, 0.15);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        @media (max-width: 520px) {
            .live-bar {
                font-size: 0.8rem;
                padding: 8px 0;
            }
            .live-bar .container {
                gap: 10px;
            }
            .live-bar .countdown {
                font-size: 0.75rem;
                padding: 2px 12px;
            }
        }